Physics
High School (11–12)
Mechanics › Fluid Flow, Bernoulli's Principle and ViscosityMechanics › Pressure and FluidsMechanics › Surface Tension and CapillarityChapter 9Mechanical Properties of Fluids
A diver feels the water press on the ears, a ship of steel floats, a plane stays in the air and a drop of water holds its shape on a leaf. Liquids and gases are called fluids, because they flow. In this chapter we find the pressure inside a fluid and the force of buoyancy, we study how a fluid flows, from a pipe to the wing of a plane, and we meet two properties that belong to the surface and the layers of a fluid, the surface tension and the viscosity. Python finds the pressure, the speed of the flow and the rise of water in a thin tube.
Part of Physics · High School (11–12) (chapter 9)
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Pressure and Fluids at Rest
Why do your ears hurt when you dive deep, and how can a small force lift a car in a garage? In this course we define pressure, we find how it grows with depth, we use Pascal's law for the hydraulic lift, we measure the pressure of the air and of a gas, and we use Archimedes' principle to find when a body floats or sinks.
Fluids in Motion and Bernoulli's Principle
Water speeds up when it comes out of a narrow nozzle, and a plane is lifted by the air that moves over its wings. In this course we describe the steady flow of a fluid with streamlines, we write the equation of continuity and Bernoulli's equation, and we use them for a tank with a hole, a Venturi meter, a spray and the lift of a wing.